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4 January, 17:44

How do I solve 1/2 (x+4-21x-5) = 46

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Answers (2)
  1. 4 January, 17:48
    0
    x=-91/1840

    Step-by-step explanation:

    Firstly deal with the bracket

    2 (x+4-21x-5)

    2 (x-21x+4-5)

    2 (-20x-1)

    -40x-2

    Back to the question

    1/-40x-2=46

    Cross multiply

    46 (-40x-2) = 1

    -1840x-92=1

    Add 92 to both sides

    -1840x=91

    Divide both sides by-1840

    x=-91/1840
  2. 4 January, 17:55
    0
    x=-4.65

    Step-by-step explanation:

    1/2 (x+4-21x-5) = 46

    1/2 (-20x-1) = 46

    1/2 (-20x) + 1/2 (-1) = 46

    1/2 (-20x) -.5=46

    1/2 (-20x) +.5=46

    .5 (-20x) = 46.5/.5

    -20x=93

    x=-4.65
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